CN1880120A - Seat structure - Google Patents
Seat structure Download PDFInfo
- Publication number
- CN1880120A CN1880120A CNA2006100916687A CN200610091668A CN1880120A CN 1880120 A CN1880120 A CN 1880120A CN A2006100916687 A CNA2006100916687 A CN A2006100916687A CN 200610091668 A CN200610091668 A CN 200610091668A CN 1880120 A CN1880120 A CN 1880120A
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- China
- Prior art keywords
- torsion bar
- spacer screen
- frame
- seat
- armchair structure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/70—Upholstery springs ; Upholstery
- B60N2/7023—Coach-like constructions
- B60N2/7035—Cushions
- B60N2/7047—Springs
- B60N2/7058—Metallic springs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/70—Upholstery springs ; Upholstery
- B60N2/7094—Upholstery springs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/10—Road Vehicles
- B60Y2200/11—Passenger cars; Automobiles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/10—Road Vehicles
- B60Y2200/15—Fork lift trucks, Industrial trucks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/30—Railway vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/50—Aeroplanes, Helicopters
- B60Y2200/51—Aeroplanes
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Seats For Vehicles (AREA)
Abstract
In order to improve seating comfort and vibration absorbency, the present invention includes a front torsion bar unit 80 disposed in the front of a seat cushion, the front end of a base net 60 is connected to a supporting frame 84 of the front torsion bar unit 80, the rear end of the base net 60 is connected to a rear frame 70. Accordingly, owing to elastic force of a front torsion bar 81 of the front torsion bar unit 80 positioned in the front of the seat cushion, a sense of stroke at the time of seating is enhanced. A structure to dispose a torsion bar unit in the front as in the present invention works upon a tiny load fluctuation sensitively, and absorbency of high frequency vibration is further enhanced.
Description
1, technical field
The present invention relates to a kind of armchair structure, relate in particular to the seat that is suitable for the Transport Machinery such as aircraft, train, steamer, forklift, self-propelled vehicle or the like.
2, background technology
In patent documentation 1 to 5, disclose by striding across seat frame and stretched the armchair structure that the buffer component such as stereo weaving fabric (three dimensional network member) forms.When forming buffer component when stride across the seat frame stretching, extension in this mode, in order to improve the ability that prevents, absorption of vibrations, the impact absorbency of bottom contact, the spacer screen of being made by the cloth such as stereo weaving fabric, bidimensional cloth or the like is provided at below the above-mentioned buffer component via elastic component.In all patent documentations 1 to 5, the torsion bar unit of the support frame that comprise torsion bar, supports at the arm of falling direction upper offset backward with by arm is placed on the seat cushion rear portion, and is connected on the support frame and the resilient mounting spacer screen by the rear end with spacer screen.The front end of pointing out spacer screen is fixed on the forward frame that constitutes seat frame.
(patent documentation 1) Japanese Patent Application Publication 2004-347577
(patent documentation 2) Japanese Patent Application Publication 2003-182427
(patent documentation 3) Japanese Patent Application Publication 2004-188164
(patent documentation 4) Japanese Patent Application Publication 2004-141545
(patent documentation 5) international monopoly is published WO2004/007238A1
In patent documentation 1 to 5 in the disclosed technology, by by torsion bar resilient mounting spacer screen, can obtain the raising of absorption of vibrations as mentioned above and do not bring the sensation of foreign matter for the user, although the following fact: compare by using thinner material as the urethanes of the buffer component of vehicle seat etc. in the prior art with general usefulness, compare stern point (H.P.) about 10mm that descends with using urethanes.Yet in all above-mentioned technology, torsion bar is placed on the seat cushion rear portion, and the front end of spacer screen is fixed.Especially, structural vibration absorptivity at arm that is connected torsion bar backward with placement on the side that is inclined upwardly and support frame is good, but because backward and the rear end of the pulling spacer screen on the direction of being inclined upwardly, when being seated in, provide the sensation that promotes hip or pelvis from the rear portion, perhaps provide the so-called sensation that is sitting on the hammock.So, by taking to eliminate the sensation that is sitting on the hammock such as the relative measure of transferring urethanes at hip, this urethanes has the thickness of about 20mm and improves positive rigidity in the urethanes by felt is immersed.Execution is in the another kind of urethanes of the anterior deposition of seat cushion, so that reduce the foreign matter sensation of framework (forward frame), said frame is placed on the front end that the seat cushion front portion is used for fixing spacer screen, but be used as urethanes owing to have the material of relative hard elastics sensation, sometimes lack stroke (stroke) sense, and from the shank reception time, counter-force is perceived as the sensation of collision seat cushion front end sometimes in the pedal operation process.
Being placed on the rear portion at the arm that will connect torsion bar and support frame is inclined upwardly in the structure on the sidepiece, because the point of load when steadily being seated in is in below the ischium node, also be, near the torsion bar unit that is placed on the rear portion, act on the torsion bar at the component on the gravity direction, this makes that torsion bar is difficult to move, and is used for forwardly being difficult to effect with the component in the horizontal direction of rear portion transfer arm and support frame.Therefore, if these put improved words, then can further improve absorption of vibrations.
When being equal to or greater than moving backward of predetermined value and being applied on the back of seat, seat cushion near the center of the side frame of seat cushion from the downward elastic deformation of rear section.Therefore, provide the support frame of torsion bar unit that makes torsion bar be positioned at the top, has the arm that stretches out from torsion bar downwards simultaneously as following this distortion to be released displacement forward at the seat cushion rear portion, and act on the spacer screen that fluffs.Therefore, when placing spacer screen, can not fully carry out the function of control seat back frame distortion by spacer screen in this mode.
Owing to place this structure place the rear portion of structure at seat cushion of torsion bar unit at the rear portion near, and need big space place torsion bar unit, has the problem that the available leg room in seat back forwardly often is restricted.
Summary of the invention
On the basis of considering above problem, obtain the present invention, the object of the present invention is to provide a kind of armchair structure, it not only can improve the stroke sense when being seated in, and can further improve absorption of vibrations, keep the stern point simultaneously and be lower than the about 10mm of traditional Chinese chair structure, so that further improve the sensation of sitting, be seated in traveling comfort and ride comfort, and do not increase structural complexity or number of components, and can widen at the obtainable leg room of rear seat.
In order to overcome the above problems, the invention of describing in claim 1 provides a kind of armchair structure, and it has the following spacer screen of buffer component that strides across the buffer component of the seat cushion that seat frame places and be placed on seat cushion by stretching, extension, comprising:
Anterior torsion bar unit, it comprises torsion bar, connects the arm of this torsion bar and the support frame that is supported by arm, and forwardly provides these arms at the place, front portion of seat cushion rotationally with back pivot around the torsion bar as fulcrum, wherein
The front end of spacer screen combines with the support frame of the anterior torsion bar unit of reeling from top, and the rear end of spacer screen combines with the rear frame that is placed on the seat cushion rear portion along the bench width direction.
The armchair structure that the invention provides a kind of according to claim 1 as claimed in claim 2, it is lower than the support frame that is supported by arm wherein to provide anterior torsion bar unit to make that the torsion bar that is used as fulcrum is positioned at.
The armchair structure that the invention provides a kind of according to claim 2 as claimed in claim 3, that wherein stretches out downwards is installed on the support frame of anterior torsion bar unit in conjunction with support, the front end of spacer screen more than support frame by and stretch around support frame, and the combined part that provides at the front end place with combine in conjunction with support.
The armchair structure that the invention provides a kind of according to claim 1 as claimed in claim 4, wherein forwardly in the torsion bar unit pivoted scope of arm be set at respect to the unloaded state around torsion bar respectively forwardly with the 40 ° of angles or lower in rear portion.
The armchair structure that the invention provides a kind of according to claim 1 as claimed in claim 5, wherein in impact process when the load that is equal to or greater than preset limit is placed on the back of seat backward, the side frame elastic deformation of seat frame, rear frame is at sweptback direction top offset, the tension force of spacer screen increases, and makes it possible to control the distortion of back frame.
The assistant spring mechanism that provides below spacer screen between anterior torsion bar unit and the rear frame further is provided the armchair structure that the invention provides a kind of according to claim 1 as claimed in claim 6, so that with the spacer screen support loads.
The armchair structure that the invention provides a kind of according to claim 6 as claimed in claim 7 wherein forms assistant spring mechanism and comprises the projection that is placed on the following air cushion of spacer screen and has a plurality of separations.
The armchair structure that the invention provides a kind of according to claim 6 as claimed in claim 8, wherein assistant spring mechanism comprises and is placed on the following auxiliary net of spacer screen and will assists elasticity of net to support to wind spring on the side frame of seat frame.
The armchair structure that the invention provides a kind of according to claim 1 as claimed in claim 9 further is included near the respective side portion at front end place of spacer screen and is placed on elastic force regulating spring between the combined part of front springs of seat cushion front portion.
The armchair structure that the invention provides a kind of according to claim 1 as claimed in claim 10 further is included near the respective side portion of rear end of spacer screen and is placed on elastic force regulating spring between the combined part of Rear springs at seat cushion rear portion.
Description of drawings
Fig. 1 is the view that illustrates according to the armchair structure of first embodiment of the invention;
Fig. 2 is the cross section arrow diagram along Fig. 1 center line A-A intercepting;
Fig. 3 is used for explaining according to the figure of the foregoing description in the function of pedal operation process armchair structure;
Fig. 4 is used for explaining according to the figure of the foregoing description in the function of impact process armchair structure;
Fig. 5 is the view of explaining in the above-described embodiments in conjunction with the method for spacer screen;
Fig. 6 A and Fig. 6 B are the views of preferred embodiment that the associated methods of spacer screen is shown;
Fig. 7 A and Fig. 7 B are the views that the associated methods of traditional spacer screen is shown;
Fig. 8 is the view that illustrates according to the armchair structure of second embodiment of the invention;
Fig. 9 is the cross section arrow diagram along Fig. 8 center line A-A intercepting;
Figure 10 is the view that illustrates according to the armchair structure of third embodiment of the invention;
Figure 11 is the cross section arrow diagram along Figure 10 center line A-A intercepting;
Figure 12 is the view that illustrates according to the armchair structure of fourth embodiment of the invention;
Figure 13 is the cross section arrow diagram along Figure 12 center line A-A intercepting;
Figure 14 is the view that illustrates according to the armchair structure of fifth embodiment of the invention;
Figure 15 is the cross section arrow diagram along Figure 14 center line A-A intercepting;
Figure 16 is the view that illustrates according to the armchair structure of sixth embodiment of the invention;
Figure 17 is the cross section arrow diagram along Figure 16 center line A-A intercepting;
Figure 18 is the view that illustrates according to the armchair structure of seventh embodiment of the invention;
Figure 19 is the cross section arrow diagram along Figure 18 center line A-A intercepting;
Figure 20 is the view that illustrates according to the armchair structure of eighth embodiment of the invention;
Figure 21 is the cross section arrow diagram along Figure 20 center line A-A intercepting;
Figure 22 is the view that illustrates according to the armchair structure of ninth embodiment of the invention;
Figure 23 is the cross section arrow diagram along Figure 22 center line A-A intercepting;
Figure 24 is the view that illustrates according to the armchair structure of tenth embodiment of the invention;
Figure 25 is the cross section arrow diagram along Figure 24 center line A-A intercepting;
Figure 26 is the view that illustrates according to the armchair structure of eleventh embodiment of the invention;
Figure 27 is the cross section arrow diagram along Figure 26 center line A-A intercepting;
Figure 28 is the view that is illustrated in the result that transmissibility of vibration is measured in the test case.
The specific embodiment
After this, will further explain the present invention based on the embodiment shown in the accompanying drawing in detail.Fig. 1 and 2 is the view that illustrates according to the armchair structure 10 of first embodiment of the invention.This armchair structure 10 comprises seat frame 20 and back frame 30.Seat frame 20 comprises the side frame that is placed on both sides with preset distance.The buffer component that placement is used for seat cushion 40 covers side frame etc. so that stride across these frameworks by stretching, extension.Back frame 30 comprises the side frame placed with preset distance etc., and places the buffer component that is used for back of seat 50 and cover side frame etc. so that stride across these frameworks by stretching, extension.
Can use following structure as seat cushion or be used for the buffer component 50 of back of seat: this structure is the bidimensional cloth (braided fabric, baking oven (oven) fabric, net or the like) that is laid with thin urethanes, but the preferred stereo weaving fabric (three dimensional network member) that uses.Although the stereo weaving fabric approaches but has high restorability and moderate elasticity.Therefore, it demonstrates the soft spring feature on one point the time when load concentration, but with the positive rigidity height in the positive contact position of pre-sizing, and have the feature that shows the hard spring feature.For example, have in the load deflexion feature of pressing plate of the 30mm diameter that protrudes bone corresponding to the people in use, the soft spring feature functions, and have in the load deflexion feature of pressing plate of 98mm diameter in use, the spring feature functions of high positive rigidity and high linearity had.The stereo weaving fabric has following spring feature: this spring feature has near the tendency of measuring the situation of people's hip muscle with the pressing plate of diameter 30mm and diameter 98mm.Therefore, when stereo weaving fabric during as the buffer component of the buffer component of seat cushion 40 or back of seat 50, place the layer that has near people's muscular features, this makes it possible to effectively disperse external force and the sensation that do not have foreign matter.
The stereo weaving fabric is that relief three-dimensional structure is arranged, it comprise be separated from each other a pair of bottoming (ground) braided fabric placed and by back and forth this to the bottoming braided fabric and with a plurality of connection yarns of both bonded assemblys.Bottoming forms plane knitting structure (fine mesh) one of in the braided fabric, it is for example made by being connected from the yarn of multiple twin monofilament with one of line direction in stringer, and another bottoming braided fabric forms the pin structure of (hexagon) mesh that has honeycombed, and it is for example by making from the yarn of multiple twin chopped fiber.Much less this braiding structure can be arbitrarily, and can adopt other braiding structure except that fine mesh structure or honeycombed structure, and the combination also be arbitrarily, for example concerning two kinds of fabrics, all adopt the fine mesh structure.This connection yarn is the yarn that weaves between a pair of bottoming braided fabric, so that maintain the preset distance between a bottoming braided fabric and another bottoming braided fabric, and is used to the stereo weaving fabric to provide redetermined rigidity.The thickness that forms the bottoming yarn of bottoming braided fabric is selected from following scope: it can provide the waist intensity of necessity for the stereo weaving fabric, and does not cause any assembling difficulty.
As the material of bottoming yarn or connection yarn, can enumerate syntheticfibres or regenerated fibre such as polypropylene, polyester, polyamide, polyacrylinitrile, rayon etc., and the natural fiber such as wool, silk, cotton.These materials can use separately, and perhaps combination in any is used.Preferably, can use the thermoplastic polyester's resin such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT) or the like, amilan such as nylon 6, nylon 66 or the like, polytrimethylene terephthalate (PTT) is perhaps by making up two or more resins that obtain in these resins.And the polyester sequences resin is because good recyclability and suitable.The shape of bottoming yarn or connection yarn does not limit and can adopt transversal veil of round section yarn, modification or the like.
Connect yarn and can in the bottoming braided fabric in being present in front layer and back layer, form annular shape stitch, perhaps also can adopt the structure that on the bottoming braided fabric that is positioned on front layer and the back layer, stretches by insertion system, but by in the opposite direction tilt each other, intersect in (X-shaped) or in framework (truss), the connection that is connected yarn with at least two of the front layer and the back layer of braided fabric is preferably, so that the shape stability of improvement stereo weaving fabric.
Point out to weave the stereo weaving fabric by braider with two relative hand-manipulating of needle beds.As this braider, can enumerate two La Xieer braider, Double Circle braiders, have weft knitting machine of V bed or the like.In order to obtain at stereo weaving fabric good aspect the dimensional stability the preferred pair La Xieer braiders that use.
Arrange in the conventional confguration of torsion bar unit at the rear portion of seat cushion, following situation takes place sometimes: because by being used to finish the finishing processing of outward appearance, load always is applied on the torsion bar, so the mobile of torsion bar degenerates, and the power that acts on the direction of the centre of gration that is orthogonal to torsion bar (component in the horizontal direction in this embodiment) reduces, and makes shock absorption weaken.Yet in the present embodiment, when anterior torsion bar unit 80 was provided at place, the front portion of seat cushion, leg was often because pedal operation or whole health vibrate moves, and load can not always be applied on the anterior torsion bar unit 80.The power that acts on the direction of the centre of gration that is orthogonal to torsion bar 81 (component in the horizontal direction in this embodiment) is stronger.Therefore, the anterior torsion bar unit 80 of present embodiment is easy to move and do not slacken shock absorption.
Anterior torsion bar unit 80 comprises: by connecting the torsion bar 81 that metal fittings 21b and 22b support, above-mentioned connection metal fittings 21b and 22b are providing on the arbitrary portion near the front end on the two ends of torsion bar 81, at the side frame of seat frame 20 regularly; Be connected respectively to the arm 82 and 83 on the two ends of torsion bar 81; And support frame 84, it stretches between two arms 82 and 83, and offers above-mentioned anterior torsion bar 81 similarly along the Width of seat cushion.In the present embodiment, provide arm 82 and 83 so that stretch out torsion bar 81 as fulcrum, around the torsion bar 81 front and back pivoted as fulcrum, and when reversing owing to pivoted, they are owing to the elastic force of torsion bar 81 is tending towards returning initial position.Drg is used to be controlled at the pivoted scope of arm 82 and 83 front and back arms 82 and 83.In the present embodiment, arm 82 and 83 is centered on by annular frame 21d and 22d in Fig. 1.Beyond annular frame 21d and 22d, be positioned at part on the side that recedes of arm 82 and 83 as the drg of the sweptback pivoted scope of control, be positioned at the drg of the pivoted scope that the part on the side that recedes of arm 82 and 83 turns forward as control.Be preferably set in the scope that on the direction that turns forward and recede, centers on 40 ° of torsion bar 81 maximums respectively in abutting connection with the arm 82 of drg and 83 pivoted scope, and more preferably in 25 ° to 35 ° scope.Set by this, when applying greater than the load of predetermined restriction as the tension force of spacer screen 60, can be by retrain the distortion of back frame in abutting connection with drg.
The rear end 61 of spacer screen 60 is connected on the rear frame 70, and front end 62 reels and be attached thereto from top around the support frame 84 of anterior torsion bar unit 80, so that as the elastic force of torsion bar 81.Particularly, shown in Fig. 2 and 5, that stretches out downwards offers support frame 84 in conjunction with support 85.The front end 62 of spacer screen 60 is pulling forward after passing through above support frame 84, and be formed in basic U-shaped board member that front end provides will bound fraction 62a with combine in conjunction with support 85, the feasible fixedly front end 62 of spacer screen 60 is so that reel from top around support frame 84.By as above constructing, when load was applied on the spacer screen 60 from top, spacer screen 60 displacements were so that the support frame 84 of the anterior torsion bar unit 80 of reeling.
When the people took a seat, the point that forwardly applies body wt between torsion bar unit 80 and the rear frame 70 was positioned on rear frame 70 sidepieces, and above-mentioned rear frame 70 sidepieces are the end that will fix of spacer screen 60, and load is applied on the spacer screen 60 from top.Therefore, greatly depress near the rear end that is positioned at the following spacer screen 60 of ischium node, and spacer screen 60 is out of shape downwards in the vicinity, rear end.Yet, forwardly in the torsion bar unit 80, at the torsion bar 81 that provides than support frame 84 lower positions as the fulcrum of pivotal movement, be connected in the above described manner to support frame 84 in conjunction with on the support 85.And because the point of body wt effect is on rear frame 70 sidepieces away from support frame 84, spacer screen 60 displacements are so that coiling support frame 84, and the horizontal component of load greatly acts on.Therefore, in the load fluctuation process, torsion bar 81 and arm 82 and 83 (support frame 84) are shifted more delicately than the expansion of spacer screen 60.Therefore, as shown in Figure 3, in the pedal operation process, owing to the stretching, extension of hip owing to knee raises, spacer screen 60 is followed the hip upward displacement, and the arm 82 of anterior torsion bar unit 80 and 83 can easily rotate at the motion direction head lamp brush guard pivot much at one with knee.
In the support frame of the torsion bar unit of in the patent documentation of as above enumerating 1 to 5, arranging, shown in Fig. 7 A and 7B, in the rear end of spacer screen from top or from support frame after the following coiling support frame, this rear end is spurred towards the spacer screen front end, and two positions are overlapping towards the position of front from the rear end.In other words, connection spacer screen rear end is neighbouring so that form cylinder under the state that support frame is inserted into.Therefore, when applied load, be connected to, produce friction to the perimeter surface rotation of the spacer screen on the support frame of cylindrical shape along support frame.Therefore, when making connection structure between spacer screen and support frame be similar to conventional confguration, a part of load is received by this friction, and it has eliminated the power that is used for around torsion bar 81 rotation support frames 84 and arm 82,83, and this causes desensitization.
In Fig. 2, only a plate-like articles as Fig. 6 A be shown specifically in conjunction with support 85.Yet, in Fig. 5, as Fig. 6 B connect shown in detail basic U-shaped in conjunction with support 85.Can use both conducts in conjunction with support 85.Under the situation of as shown in Figure 6A plate,, be applied to load on the spacer screen 60 by the strength support of combined part 62a and sewing thread 66 because front end 62 only is connected on the combined part 62a that is made by the board member of basic U-shaped by sewing thread 66.Therefore, when stereo weaving fabric or the like when the spacer screen 60, with sewing thread 66 bonded assembly positions owing to load is shifted, the stretching of the spacer screen that generation is not expected, and durability issues also occurs.Therefore, shown in Fig. 6 B, by use for basic U-shaped in conjunction with support 85, the end of preferable configuration spacer screen makes and is connected to the inside in conjunction with support 85 that the combined part 62a of front end 62 inserts basic U-shaped by sewing thread 66.By taking this structure, when applied load, insert basic U-shaped in conjunction with the in-to-in of support 85 part at the hand of rotation superior displacement, and the inside face of combined part 62a and basic U-shaped in conjunction with a wall portion of support 85 between and be inserted near the upper end of part outside face and basic U-shaped in conjunction with another wall portion of support 85 between produce friction.Therefore, owing to the displacement and the above-mentioned friction in conjunction with the part of support 85 of inserting basic U-shaped on hand of rotation make the load that is applied to spacer screen 60 be converted into alteration of form, so can eliminate the power on the connecting bridge that is applied to sewing thread 66 and can suppress the unnecessary stretching of spacer screen 60.
The assistant spring mechanism that is used from support loads with spacer screen 60 1 is provided for 60 times at spacer screen.This assistant spring mechanism of present embodiment comprises air cushion 100.The projection 101 and 102 that this air cushion 100 comprises a plurality of (being two in the present embodiment) separates, and at the fixing flex plate 103 of the edge part office of these projections 101 and 102 one, this flex plate 103 is fixed in the rear surface of spacer screen 60 and corresponding to nearby providing near position spacer screen 60 front portions from the center.Projection 101 and the 102 stereo weaving fabrics by processing form approximately cylindrical shape, and air bag 101a and 102a with air intlet are arranged in projection inside.The pump (not shown) is connected on the air intlet that provides in air bag 101a and 102a, makes it possible to regulate the amount of air of injection.And, below projection 101 and 102, provide the accessory plate 105 that is fixed on the seat frame 20, make when spacer screen 60 moves down projection 101,102 in abutting connection with and demonstration predetermined elasticity power.
By this structure, carry out firm support people's load and prevent the function that the bottom contacts, and some are arranged forward than the position corresponding to the point below the ischium node owing to air cushion when the people is seated in 100, prevent that in being seated in process hip from shifting forward and keeping the stable function that is seated in posture and showing.Preferably setting not adjacency on accessory plate 105 of air cushion 100 under the situation of high-frequency vibration with little displacement.Can suppress thus to transmit vibration via accessory plate 105.In addition, air cushion 100 shows the function that alleviates impulsive force when the big load of input such as colliding.
According to current embodiment, when being seated in, the arm 82,83 of anterior torsion bar unit 80 and support frame 84 move on sweptback direction around the torsion bar 81 as fulcrum.In other words, when being seated in, arm 82 and 83 effective strokes, and displacement is big.Therefore, when being seated in, mainly, make it possible to improve the sensation of taking by femur rear side and directly perception stroke sense of hip.As mentioned above, it has makes the structure of arm 82 and 83 effective strokes, and the tension force of spacer screen 60 always acts on the torsion bar 81, and the pivotally supported direction of the arm 82,83 of the moving direction of leg and anterior torsion bar unit 80 and support frame 84 is consistent each other.Therefore, even when having the thin stereo weaving fabric of about 30mm thickness or thin urethanes or the like, there not be the sensation of colliding although place support frame 84 as the buffer component 40 of seat cushion yet.In other words, because the elastic force of torsion bar 81, the tension force of spacer screen can act on, and near the positive rigidity the front end 62 of spacer screen 60 increases, make face near front end 62, produce, and the moving direction of while leg is consistent with the hand of rotation of support frame 84 with high rigidity.Therefore, counter-force can not easily act on, and makes support frame 84 not be perceived as line.Therefore, near the seat cushion front portion, adopt thick urethanes to become unnecessary in the prior art as auxiliary buffer component.
Be seated in the state being seated in the static state that moves after having finished, when leg moves forward when being used for operating pedal, if leg as connection structure, as shown in Figure 3, pelvis is suitable for moving up.Therefore, by support frame 84 displacements formed of pipe so that pivoted forward.Because the sense of displacement of support frame 84 is almost consistent with the knee moving direction, the elastic force of torsion bar 81 can useful effect, has cancelled counter-force, and the sensory perception of collision on leg is to minimum.Be seated under the state, the heaviest load is applied near below the ischium node.Yet because the elastic force self of spacer screen 60 acts on as mentioned above, and the restoring force of torsion bar 81 works at once, and absorption of vibrations is good, and the bottom contact feel not obvious.And body weight can be by above-mentioned high rigid surface firm support.At this moment, the elastic force of air cushion 100 is with arbitrary way work, steadily is seated in posture so that prevent that hip from shifting forward and keeping.
For the vibration of in driving procedure, importing via body platform, because the component effect on the horizontal direction that produces by the relative motion of load fluctuation and leg and pelvis, anterior torsion bar unit 80 is not subjected to influence because of the elastic force of the event of the expansion of spacer screen 60 self and contraction, this produces the linearly elastic sensation of torsion bar 81, and damping becomes littler.Simultaneously, torsion bar 81 and arm 82,83 (support frame 84) displacement delicately, and especially, effectively be absorbed in the vibration in the high-frequency region scope.When after load was applied to back of seat, as shown in Figure 4, elasticity was out of shape downwards near the rear portion of the side frame of seat cushion, and rear frame 70 displacement backward on downward-sloping direction that combines with the rear end 61 of spacer screen 60 when heavy.Simultaneously, even when arm 82 and 83 recedes as far as possible, by on as the ring-like framework 21d of drg and 22d in abutting connection with arm and the pivoted scope of Control arm 82 and 83.Therefore, spacer screen 60 provides tension force on direction of extension, and this is controlled at the distortion of back of seat middle frame.And when applying big impact, drg distortion or displacement make the control position of arm 82 and 83 move backward, and spacer screen 60 fluffs, and makes damping rate increase, and alleviates impulsive force thus.
Should be understood that symbol 120 indication lumbar support in Fig. 1 and 2, it provides on the rear surface of the spacer screen 36 of the back of seat that is supported by back frame 30, so that can be in abutting connection with the zone from the pelvis to the lumbar vertebrae.Lumbar support 120 is used the structure identical with above-mentioned air cushion 100, and provides two projections 121 and 122, is combined with air bag 121a and 122a in it, and flex plate 123 and salient are divided into integral body.Because it comprises flex plate 123, compare with the conventional known lumbar support, because flex plate, projection act as has the more collision sense of deep camber, this provides has high linear spring feature.Therefore, become and not use the change of following spine curvature energetically with third and fourth lumbar vertebrae as the center.Thus, can support lumbar vertebrae and pelvis and do not have the sensation of foreign matter.Reduce to vibrate the function that is sent to waist owing to having high linear spring feature, also having.In other words, lumbar support 120 not only has the effect of supporting and regulating waist, and because the Hookean spring feature has the function of absorbing high-frequency vibration.Can construct air bag 121a and 122a and be free of attachment on the pump, make air to enter if having time and go out, and can utilize the damping function that causes by the air flows among air bag 121a and the 122a in this case in institute.
Fig. 8 and 9 illustrates the armchair structure 10 according to second embodiment of the invention.The armchair structure 10 of present embodiment is provided near the connection metal fittings 21b and 22b that supports torsion bar 81 among first embodiment, be in the position that does not hinder anterior torsion bar unit 80 to move, and comprise the elastic force regulating spring (after this being called " anterior elastic force regulating spring ") 140 and 141 that constitutes by wind spring, the one side combines with part 21c and 22c, this part 21c and 22c be in conjunction with the front springs that forms a part of forward frame 20, and combine near the respective side portion of another side and the front portion 62 of spacer screen 60.
According to present embodiment, because armchair structure comprises anterior elastic force regulating spring 140 and 141, except the elastic force of the torsion bar 81 of anterior torsion bar unit 80, anterior elastic force regulating spring 140 and 141 elastic force work.Therefore, compare with first embodiment shown in Fig. 1 and 2 and can realize having the structure of strong elasticity sensation, make it possible to more firmly support body weight.When the vibration input,, can carry out the adjusting of elasticity sensation or damping capacity by simple structure because these anterior elastic force regulating springs 140 and 141 are worked with torsion bar 81.And in the present embodiment, on each sidepiece that is placed on spacer screen 60 in each anterior elastic force regulating spring 140 and 141, but the number of springs of placing does not limit.
Figure 10 and 11 illustrates the armchair structure 10 according to third embodiment of the invention.In the present embodiment, also comprise elastic force regulating spring (after this being called " rear portion elastic force regulating spring ") 142 and 143 the anterior elastic force regulating spring 140 and 141 of this armchair structure in second embodiment, its first side combines with rear frame 70, and combines near the respective side portion at another side and the rear portion 61 of spacer screen 60.Pointing out rear frame 70 in the present embodiment also as the part in conjunction with Rear springs, also is adoptable but the structure that provides in conjunction with the part of Rear springs is provided with rear frame 70.
According to present embodiment, because the function of anterior torsion bar unit 80, in being seated in process, needless to say can improve the stroke sense, improve absorption of vibrations or the like, because armchair structure comprises rear portion elastic force regulating spring 142 and 143, so also can improve near the supporting capacity of the load being applied to below the ischium node.
And in the present embodiment, the top of the spacer screen 36 of back of seat is connected on the top frame of back frame 30 via wind spring 35.By wind spring 35 is provided, can improve stroke sense and absorption of vibrations in back of seat.Wind spring 35 can provide in other embodiments if desired.
Although anterior elastic force regulating spring 140 and 141 and rear portion elastic force regulating spring 142 and 143 all use in the present embodiment, can have the structure of not placing anterior elastic force regulating spring 140 and 141 certainly.
Figure 12 and 13 illustrates the armchair structure according to fourth embodiment of the invention.Present embodiment has following structure: the auxiliary net 110 in rear portion be placed on downwards corresponding to from the center nearby near the position spacer screen 60 rear portions, be independent of spacer screen 60, and to the side frame 21 of forming a part of seat frame 20, and other structure and first embodiment are identical via wind spring 111 flexible fastenings.Be similar to spacer screen 60, the auxiliary net 110 in rear portion can use bidimensional cloth (knitting, fabric, net or the like) or stereo weaving fabric (three dimensional network member) or the like.Corresponding to nearby being positioned at below people's ischium node near the part spacer screen 60 rear portions from the center.Although because of the existence of the auxiliary net 110 in rear portion so bigger in this part place support loads, in big load input process, can realize the further inhibition of bottom contiguous sense.When the net with little spring constant was assisted net 110 as the rear portion, damping capacity on cushion increased, and when use had big spring constant, elasticity sensation on cushion increased.Therefore, can regulate the damping capacity and the elasticity sensation of whole seat cushion.Point out also can be provided in the present embodiment if desired the corresponding elastic force regulating spring 140 to 143 shown in the second and the 3rd embodiment.
Figure 14 and 15 is views that fifth embodiment of the invention is shown.Present embodiment is characterised in that the air cushion 100 that uses is configured to be covered by the cloth material 108 that the end is connected on the spacer screen 60 in above-mentioned each embodiment, in other words, air cushion 100 inserts in the bag shape cloth material 108.When the people is seated in or vibrates when input, the scope (zone) that is centered on by spacer screen 60 and cloth material 108 changes by tension change, and the alteration of form of the air cushion 100 that contacts with them makes the elastic working of air cushion 100.In the embodiment shown in above-mentioned each embodiment, accessory plate 105 is placed on air cushion below 100, so that allow the elastic working of air cushion 100.Yet in the present embodiment, by placing this cloth material 108, accessory plate 105 offers seat frame 20 and becomes unnecessary, and this helps the simplification of structure and the weight of seat frame 20 to reduce.Needless to say this cloth material 108 can be used among above-mentioned each embodiment.
Figure 16 and 17 illustrates the armchair structure according to sixth embodiment of the invention.In first to the 4th embodiment, air cushion 100 is as being placed on the assistant spring mechanism of spacer screen below 60, and present embodiment has following structure: substitute air cushion 100, the body side frame 21 and 22 that nearby strides across via a part of seat frame 20 of wind spring 91 compositions near the auxiliary net 90 that extends the spacer screen 60 from the center stretches.Above-mentioned bidimensional cloth, stereo weaving fabric or the like can be as auxiliary nets 90.Be similar to the air cushion 100 among first to the 4th embodiment, this auxiliary net 90 can show following function: firmly support body weight and prevent the bottom contact.Because it is placed on corresponding near position in the zone anterior to it nearby from spacer screen 60 centers, this position than corresponding to the position of the point below people's ischium node when the people is seated in a little more forward, demonstrate and prevent the previous displacement of hip and when being seated in, keep the function that pulsation-free is seated in posture.
Also can make following structure in this case, make with the 7th embodiment shown in Figure 18 and 19 in the same anterior elastic force regulating spring 140 and 141 of placing so that carry out the spring function of anterior torsion bar unit 80, this is similar to above-mentioned second embodiment.And, can make following structure once more, make and the same further placement rear portion elastic force regulating spring 142 and 143 in armchair structure 10 according to eighth embodiment of the invention shown in Figure 20 and 21.
With the same in the 9th embodiment shown in Figure 22 and 23, in the tenth embodiment shown in Figure 24 and 25, can not directly but be connected with rear frame 70 via the rear end 61 of wind spring 160 with spacer screen 60.When constructing in this mode, because the elastic force of wind spring 160 works when load is applied to the rear end side of spacer screen 60, increase with the stroke sense of comparing on 61 sidepieces of rear end shown in above-mentioned each embodiment, this causes armchair structure 10 to feel the more sensation of flexible support when being seated in.And it causes phase delay when resonance, and makes resonance peak descend.Therefore, can make this structure according to user's physique, body weight or selection.The tenth embodiment shown in the 9th embodiment shown in Figure 22 and 23 and Figure 24 and 25 differs from one another at following this point: anterior elastic force regulating spring 140 and 141 provides in the latter.
The wind spring 160 of the placement shown in Figure 22 to 25 (spring constant k2) takes series to arrange spring structure, and this structure has the torsion bar 81 (spring constant k1) of anterior torsion bar unit 80 via spacer screen 60.Therefore, spring constant from k1 to (k1 * k2)/(k1+k2) become littler, and because both work together, so damping rate becomes big, this is the big feature of damping.
Figure 26 and 27 illustrates the armchair structure according to eleventh embodiment of the invention, the member that is made of flex plate 150 wherein is provided, so that adjacency on the backrest surface of spacer screen 60, and the member that replacement provides air cushion 100 uses auxiliary wind spring 151 with the member that provides auxiliary net 90, and the one end is in the adjacency on the subframe 105 of a part of seat frame 20 of formation of the adjacency and the other end on the flex plate 150.This structure also demonstrates such as supporting body weight, prevent the bottom contact and being seated in postural stability each function improving.And, in the present embodiment, by flex plate 150 be placed on assistant spring mechanism that the auxiliary wind spring 151 on the backrest surface constitutes and also be placed on the backrest surface of backrest spacer screen 36 so that as lumbar support.Because assistant spring mechanism comprises flex plate 150, be similar to the lumbar support 120 that forms by air cushion shown in the assembly drawing 1,2 and flex plate 123, can be suppressed at the compressing on nervous system between third lumbar vertebra and the fourth lumbar vertebra, and support lumbar vertebrae and ischium and do not have the sensation of foreign matter.And, because high Hookean spring feature also can reduce vibration and be sent to waist.And, can absorb by center of gravity move generation spine curvature change and do not cause big load fluctuation, and the body pressure dispersiveness that causes by the spine curvature change of control change to little scope.
Although place anterior elastic force regulating spring 140,141 and rear portion elastic force regulating spring 142,143 as mentioned above in the present embodiment, the structure of needless to say not placing the structure of these elastic force regulating springs 140 to 143 and only placing either side is adoptable.And in the present invention, take following structure: wherein the top of the spacer screen 36 of back of seat is connected to via wind spring 35 on the top frame of back frame 30, makes that being similar to the 3rd embodiment improves stroke sense and absorption of vibrations in back of seat.
(test case)
To armchair structure measuring vibrations transfer ratio (being called " fixing spring constant: anterior torsion bar ") according to the embodiment of the invention shown in Fig. 1 and 2.Point out the bidimensional cloth material as spacer screen 60, the stereo weaving fabric is as the buffer component 40 of seat cushion, and they stride across seat frame 20 stretching, extensions with the extensibility less than 5% in the armchair structure that test is used.And, as a comparison, to following structure measurement vibration transfer ratio: do not provide anterior torsion bar unit 80 with the same in the armchair structure shown in Fig. 1 and 2, with the front portion of spacer screen 60 and the forward frame secure bond of the front end stretching, extension of the side frame that strides across seat frame 20, and provide torsion bar unit (in Figure 28, being called " fixing spring constant: rear portion torsion bar ") at the seat cushion rear portion, and to the armchair structure of following conventional known (being called " foam urethane fully " in Figure 28) measuring vibrations transfer ratio: this structure does not provide torsion bar unit, and provides high density with 90mm thickness and high resiliency urethane foam as seat frame.Should be understood that the seat cushion rear portion provide the structure (in Figure 28, being called " fixing spring constant: rear portion torsion bar ") of torsion bar unit have with patent documentation 1 (Japanese Patent Application Publication 2004-347577) in identical structure is disclosed, wherein torsion bar is placed on the top, arm stretches out downwards, and the rear portion be used for spacer screen 60 is installed is connected to support frame on the arm.
At following situation measuring vibrations transfer ratio: above-mentioned each armchair structure is installed on the platform of vibrator, acceleration sensor is corresponding to being installed on the buffer component of seat cushion near with upper/lower positions at the ischium node, the Japanese male sex with 58Kg body weight is seated in each armchair structure, and vibration is applied with the sinusoidal waveform (peak amplitude 2mm between vertical centering control) of a side amplitude 1mm, changes oscillation frequency in 180 seconds from 0.5Hz to 15Hz.The result is shown in Figure 28.
For complete foam urethane, because resonance point surpasses 5Hz, and the vibration transfer ratio of resonance point is low to 1.7Hz, and the worst-case value that is illustrated in the high-frequency region absorption of vibrations is equal to or greater than 8Hz.Yet, in providing the structure of torsion bar unit, the seat cushion rear portion (in Figure 28, is called " fixing spring constant: rear portion torsion bar "), find to compare with complete foam urethane, resonance point towards low frequency side shifting more a bit, the vibration transfer ratio increases, and elasticity sensation grow.Therefore, compare the bigger raising of absorption of vibrations of obvious high frequency region with complete foam urethane.
In armchair structure, (in Figure 28, be called " fixing spring constant: anterior torsion bar ") according to the embodiment of the invention, compare with the structure that torsion bar unit is provided at the seat cushion rear portion (being called " fixing spring constant: rear portion torsion bar " in Figure 28), resonance point is moved further and vibration transfer ratio at the resonance point place increases towards low frequency side more.This is because the operating efficiency of anterior torsion bar unit 80 provides the situation of torsion bar unit higher than at the seat cushion rear portion, because the damping that the expansion of spacer screen 60 self and contraction cause diminishes, and elasticity is felt grow.Therefore, the absorption of vibrations at high frequency region further improves.
According to the present invention, have following structure and make and provide torsion bar unit in the seat cushion front portion, and the front end of spacer screen swing and in the front and back displacement.Therefore, center on torsion bar pivoted forward owing to be placed on the arm and the support frame of the anterior torsion bar unit of seat cushion front portion, and moving direction is consistent with the moving direction of knee in processes such as pedal operation basically, collision sense at seat cushion front edge place in processes such as pedal operation reduces, stroke sense in being seated in process improves, and because load is not easy to be applied directly to the front edge of seat cushion, torsion bar acts on and is not easy to cause the sensation of bottom contact delicately.Therefore the sensation of taking and be seated in traveling comfort and improve.In this case, be preferably anterior torsion bar unit torsion bar as fulcrum is provided, so that than the lower placement of supporting via arm of support frame.Simultaneously, the stereo weaving fabric etc. of preferably forming spacer screen forwardly on the support frame of torsion bar unit by and with provide so that from combining that support frame stretches out downwards in conjunction with support.By as above constructing, when applied load (body weight), because the spacer screen displacement is so that the coiling support frame, the component of load is worked easily in the horizontal direction, and when load fluctuation, the trend of the torsion bar of anterior torsion bar unit and arm (support frame) displacement is greater than the trend of spacer screen expansion.This is from the spring constant of the spacer screen tension force spring constant greater than torsion bar.On the other hand, in the structure that tradition adopts, wherein torsion bar unit is placed on the seat cushion rear portion, because point of load is below the ischium node when steadily being seated in, in other words, the torsion bar unit near being placed on the rear portion acts on the torsion bar at the component on the gravity direction, this makes that torsion bar is not easy to move, and makes that the component of support frame on the horizontal direction that moves forward and backward is not easy to act on.
And because tension force is worked backward from the support frame as the anterior torsion bar unit of starting point, the positive rigidity of spacer screen increases, and the surface with high positive rigidity forms around support frame.Therefore, the shank that is positioned at the seat cushion front portion around support frame is thought face with this part, has suppressed the sensation of local collision.
As above, compare with conventional art, even when small load fluctuation, be placed on the also bigger sensitivity of the structure ground work in the anterior torsion bar unit among the present invention, above-mentioned anterior torsion bar unit has arm and the support frame that is supported by the torsion bar pivoted in front and back.The absorptivity of high-frequency vibration further improves, and the urethanes (gasket material) that is used to be suppressed at the anterior foreign matter sensation of seat cushion can no longer need, perhaps ought in case of necessity can be thinner.
When stretching spacer screen, only placing a tubulose or plate-shaped frame at the seat cushion rear portion is enough, and becoming so to be that the available leg room of people that is sitting on the rear seat is guaranteed big place by the lower space that strengthens the front chair back.
Owing to provide torsion bar unit at the front end place of spacer screen, when armchair structure of the present invention is used for the vehicle seat of automobile etc., when hip move forward when collision, it has pushes the function of health against the buffer component of back of seat, support frame constraint human body by torsion bar unit ejects forward, and, make crash survivability to improve because high positive rigidity can make that sinking to of health (passenger) is less.And, when big when after load is applied on the back of seat, elasticity is out of shape downwards near place, the side frame rear portion of seat cushion, the rear end of spacer screen is by rear frame displacement backward, make that tension force gives spacer screen on direction of extension, thereby and also comprised the function that is suppressed at back of seat middle frame distortion.
Claims (10)
1. armchair structure, it has the following spacer screen of buffer component that strides across the buffer component of the seat cushion that seat frame places and be placed on seat cushion by stretching, extension, comprising:
Anterior torsion bar unit, it comprises torsion bar, connects the arm of this torsion bar and the support frame that is supported by arm, and forwardly provides described arm at the place, front portion of seat cushion rotationally with back pivot around the torsion bar as fulcrum, wherein
The front end of described spacer screen combines with the support frame of the described anterior torsion bar unit of reeling from top, and the rear end of described spacer screen combines with the rear frame that is placed on the seat cushion rear portion along the bench width direction.
2. armchair structure as claimed in claim 1, it is lower than the support frame that is supported by arm wherein to provide described anterior torsion bar unit to make that the torsion bar that is used as fulcrum is positioned at.
3. armchair structure as claimed in claim 2, that wherein stretches out downwards is installed on the support frame of described anterior torsion bar unit in conjunction with support, the front end of spacer screen more than support frame by and stretch around support frame, and the combined part that provides at the front end place with combine in conjunction with support.
4. armchair structure as claimed in claim 1, wherein in described anterior torsion bar unit the pivoted scope of arm be set at respect to the unloaded state around torsion bar respectively forwardly with the 40 ° of angles or lower in rear portion.
5. armchair structure as claimed in claim 1, wherein in impact process when the load that is equal to or greater than preset limit is placed on the back of seat backward, the side frame elastic deformation of seat frame, described rear frame is at sweptback direction top offset, the tension force of described spacer screen increases, and makes it possible to control the distortion of back frame.
6. the assistant spring mechanism that provides below described spacer screen between described anterior torsion bar unit and the rear frame further is provided armchair structure as claimed in claim 1, so that with the spacer screen support loads.
7. armchair structure as claimed in claim 6, wherein said assistant spring mechanism forms and comprises the projection that is placed on the following air cushion of spacer screen and has a plurality of separations.
8. armchair structure as claimed in claim 6, wherein said assistant spring mechanism comprises and is placed on the following auxiliary net of spacer screen and will assists elasticity of net to support to wind spring on the side frame of seat frame.
9. armchair structure as claimed in claim 1 further is included near the respective side portion at front end place of spacer screen and is placed on elastic force regulating spring between the combined part of front springs of seat cushion front portion.
10. armchair structure as claimed in claim 1 further is included near the respective side portion of rear end of spacer screen and is placed on elastic force regulating spring between the combined part of Rear springs at seat cushion rear portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005173047A JP4554444B2 (en) | 2005-06-13 | 2005-06-13 | Seat structure |
| JP2005173047 | 2005-06-13 |
Publications (2)
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| CN1880120A true CN1880120A (en) | 2006-12-20 |
| CN100493955C CN100493955C (en) | 2009-06-03 |
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| CNB2006100916687A Expired - Fee Related CN100493955C (en) | 2005-06-13 | 2006-06-09 | Seat structure |
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| US (1) | US7618096B2 (en) |
| EP (1) | EP1733918B1 (en) |
| JP (1) | JP4554444B2 (en) |
| KR (1) | KR100861904B1 (en) |
| CN (1) | CN100493955C (en) |
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| CN104781105A (en) * | 2012-11-19 | 2015-07-15 | 提爱思科技股份有限公司 | Seat for vehicle |
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| CN104781105A (en) * | 2012-11-19 | 2015-07-15 | 提爱思科技股份有限公司 | Seat for vehicle |
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| EP1733918A3 (en) | 2010-10-06 |
| EP1733918A2 (en) | 2006-12-20 |
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| CN100493955C (en) | 2009-06-03 |
| KR100861904B1 (en) | 2008-10-09 |
| US20060279119A1 (en) | 2006-12-14 |
| KR20060129948A (en) | 2006-12-18 |
| JP2006345953A (en) | 2006-12-28 |
| JP4554444B2 (en) | 2010-09-29 |
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